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Krytox™ XHT-BD Grease

Krytox™ XHT-BD Grease is a special extreme high temperature grease with low oil evaporation, thickened with a non-melting additive to allow use at temperatures above the melting point of common greases.

Krytox™ XHT-BD has a viscosity of 500 cSt @40°C.




Product Overview

Krytox™ XHT-BD series are special extreme high temperature greases with low oil evaporation.  Krytox™ XHT-BD grease uses a special non-melting high temperature thickener. 

Krytox™ XHT-BD series greases are nonflammable and chemically inert. Krytox™ allows extended lubrication intervals and longer equipment life.  

Krytox™ XHT-BD greases are designed for use where the temperatures are in the 288°C (500°F) range and higher, where there is a danger of melting the standard PTFE thickener. 

The base oil is an extremely viscous oil that provides good viscosity and lower evaporation at high temperatures. 

Product Specifications

Estimated Useful Range °C: –20 to 300 (with spikes to 330)
Oil Pour Point °C: -25
Base Oil Viscosity, cSt @40°C: 500
Oil Separation in 30 hr at 99°C: 6
Oil Volatility in 22 hr, % @260°C: 2.1
Appearance: White, creamy consistency
Specific Gravity at 0°C: 2.00
NLGI Grade: 1.5
Primary Chemistry: PFPE

Features & Benefits

Krytox™ XHT-BD Grease have excellent lubrication over a broad temperature range.

Due to their low surface tensions, Krytox™ base oils easily wet metallic surfaces. Because of their inertness, Krytox™ base oils have little or no adverse effect on metals.

Testing of metals at 340°C (644°F) in the absence of air has shown little evidence of corrosion. The presence of molybdenum in the metals improves corrosion resistance further.


Krytox™ XHT-BD greases are for use in low speed bearings or in pillow housings and will shear at high speeds, causing loss of oil in sealed bearings. 

The oil in the grease can begin to slowly evaporate at temperatures above 330 °C (626 °F), and this will occur at an increasing rate as temperatures increase. Re-lubrication
could be required at these temperatures to achieve optimum life.

Related Products

Krytox™ Greases

Krytox™ greases are nontoxic lubricants that maintain their lubricity and viscosity properties to reduce maintenance costs associated with re-lubrication, component failure, and downtime in demanding applications. They are created by thickening synthetic perfluoropolyether-based oil (PFPE) with polytetrafluoroethylene (PTFE) powder.

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